Co2 ppm lights off

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patrickkawi37

Well-Known Member
I currently run my co2 at 1450 ppms with the lights on.. When the lights go off.. The regulator shuts off keeping any co2 from releasing.. I know plants produce co2 when the lights are off, but how much?

As soon as my fuzzy logic meter kicks on, 5 mins after my lights are on the co2 ppm is around 1500.. Is this normal? After it was off for 12 hours? I'm only curious of this because this is a new room.. My last room when the lights would kick on the ppm would only be around 550-600.

So this room my plants are creating more co2 when they are sleeping than my last room. Is this a good or a bad thing?
 
Aeroknow

Aeroknow

Well-Known Member
patrickkawi37 said:
Once again, I think all the people with useful information have left this forum.
Click to expand...
I've had a lot of different sealed-room setups. I don't think i've ever had one of my rooms come out of the dark cycle with that high of co2 ppm. Except, a flip flop setup. Co2 was set at 1200, and both rooms shared the same air via a lung-room. That setup worked just fine, even though the dark cycles had elevated co2 levels.
Are you generator or bottle?
If bottle, is there a leak? Try spraying soapy water on regulator?
Sure plants make co2 in the dark, but 1500ppm does seem oddly high. Naturally if your in there, before lights come on and the co2 kicks on, you will have elevated the co2 levels.
Do you shut off your co2 1/2 hour before lights out? Thats what I do.
Hopefully i helped
 
hyroot

hyroot

Well-Known Member
depends on how many plants and the size of the plants. Basically the number of leaves... Roughly around 400 ppm's. If you live in a small place you would be surprised by how much co2 can be produced just by one person breathing. Granted all windows are closed.
 
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patrickkawi37

Well-Known Member
The room is big 20x18 and there are quite a few. It's pretty much full . My last room was way full too but about half the size.. It used to be 400 like yours.. Now when the lights kick on it's like 1500
 
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patrickkawi37

Well-Known Member
Aeroknow said:
I've had a lot of different sealed-room setups. I don't think i've ever had one of my rooms come out of the dark cycle with that high of co2 ppm. Except, a flip flop setup. Co2 was set at 1200, and both rooms shared the same air via a lung-room. That setup worked just fine, even though the dark cycles had elevated co2 levels.
Are you generator or bottle?
If bottle, is there a leak? Try spraying soapy water on regulator?
Sure plants make co2 in the dark, but 1500ppm does seem oddly high. Naturally if your in there, before lights come on and the co2 kicks on, you will have elevated the co2 levels.
Do you shut off your co2 1/2 hour before lights out? Thats what I do.
Hopefully i helped
Click to expand...
It's a regulator and tank. The regulator is brand new. I have sprayed soap and haven't seen any leaks I've gone in there during lights off and it stays off . I go in like 5 mins before it kicks on but it's a pretty big ass room. I haven't been shutting it off 30 mins early I will try that tonight and see it it helps, thanks. I thought this was weird too. It is a new strain I'm running they are bubbas. I am hoping it doesn't effect anything.
 
Aeroknow

Aeroknow

Well-Known Member
patrickkawi37 said:
It's a regulator and tank. The regulator is brand new. I have sprayed soap and haven't seen any leaks I've gone in there during lights off and it stays off . I go in like 5 mins before it kicks on but it's a pretty big ass room. I haven't been shutting it off 30 mins early I will try that tonight and see it it helps, thanks. I thought this was weird too. It is a new strain I'm running they are bubbas. I am hoping it doesn't effect anything.
Click to expand...
Just to be double sure it's not coming from the bottle/regulator/controller, maybe try turning off the valve on the bottle before lights out? See if it changes the outcome?
But yeah, i always figured it to be a waste pumping up the co2 rite up to lights off. I always have a timer on my co2 controllers, even though they are triggered to turn on/off via a light sensor.
 
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patrickkawi37

Well-Known Member
Aeroknow said:
Just to be double sure it's not coming from the bottle/regulator/controller, maybe try manually turning off the bottle before lights out? See if it changes the outcome?
But yeah, i always figured it to be a waste pumping up the co2 rite up to lights off. I always have a timer on my co2 controllers, even though they are triggered to turned on/off via a light sensor.
Click to expand...
Mine is on a timer as well. That is a good idea about shutting off the bottle . I'm going to see if 30 mins before helps if not I will turn off the bottle at lights out and see if that changes it. Thanks
 
a mongo frog

a mongo frog

Well-Known Member
yes high ppms will happen during night cycle. at least in my experience. my thought process is thats sense there taking in so much co2 during lights on that there releasing more during night cycle. is why humidity plays a huge factor during lights off.
 
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patrickkawi37

Well-Known Member
Sorry to bring up old topics but this shit is happening to me again. I went in right when lights came on and I almost fell over . It was 3200 ppm. I check the bottle and the regulator and everything seems to be working properly. I am not exhausting any air, sealed with co2 at 1450ppm lights on. The plants look great I am worried if it will effect quality and weight
 
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patrickkawi37

Well-Known Member
Well my co2 has been As high as 6000 when the lights kick on.. I went and got a new regulator and a 500 dollar controller and the same fucking thing. No one else has this problem ?
 
dbkick

dbkick

Well-Known Member
Co2 is toxic to plants at 4000 ppm, Also anything that breaths oxygen would be in danger at 4000 PPM I wouid imagine.
Is there another source of co2 in the room , a water heater or something?
 
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patrickkawi37

Well-Known Member
dbkick said:
Co2 is toxic to plants at 4000 ppm, Also anything that breaths oxygen would be in danger at 4000 PPM I wouid imagine.
Is there another source of co2 in the room , a water heater or something?
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No sir. Completely sealed. Nothing Inside besides plants dehumidifiers and the res. and the tank is lasting quite a long time.. I've sprayed with soap and water to make sure new regulator isn't leaking either.
 
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